Methods for the induction of reproduction in a tropical species of filamentous Ulva

C Carl; R De Nys; R J Lawton; Nicholas A Paul

doi:10.1371/journal.pone.0097396

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Methods for the induction of reproduction in a tropical species of filamentous Ulva

Journal article

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Methods for the induction of reproduction in a tropical species of filamentous Ulva

C Carl, R De Nys, R J Lawton and Nicholas A Paul

PLoS One, Vol.9(5), e97396

2014

DOI: https://doi.org/10.1371/journal.pone.0097396

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Abstract

The green seaweed Ulva is a major fouling organism but also an edible aquaculture product in Asia. This study quantified for the first time the effect of key factors on the reproduction of a tropical species of filamentous Ulva (Ulva sp. 3). The controlled timing of release of swarmers (motile reproductive bodies) was achieved when experiments were initiated in the early afternoon by exposing the thalli to a temperature shock (4°C) for 10 min and subsequently placing them into autoclaved filtered seawater under a 12 h light: 12 h dark photoperiod at 25°C. The release of swarmers then peaked two days after initiation. In contrast, segmentation, dehydration, salinity or time of initiation of experiments had no effect of any magnitude on reproduction. The released swarmers were predominantly biflagellate (95%), negatively phototactic and germinated without complementary gametes. This indicates that Ulva sp. 3 has a simple asexual life history dominated by biflagellate zoids. © 2014 Carl et al.

Details

Title: Methods for the induction of reproduction in a tropical species of filamentous Ulva
Authors: C Carl (Author) - James Cook University
R De Nys (Author) - James Cook University
R J Lawton (Author) - James Cook University
Nicholas A Paul (Author) - James Cook University
Publication details: PLoS One, Vol.9(5), e97396; 10
Publisher: Public Library of Science
Date published: 2014
DOI: 10.1371/journal.pone.0097396
ISSN: 1932-6203
Copyright note: Copyright © 2014 Carl et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Organisation Unit: School of Science and Engineering - Legacy; University of the Sunshine Coast, Queensland; School of Science, Technology and Engineering
Language: English
Record Identifier: 99450544102621
Output Type: Journal article

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